What is the Bias Score and how is it calculated?

The Bias Score compares a team's win rate under a specific referee to their baseline win rate (45%). A negative score suggests the team performs worse than average under that referee.

What sample size is considered reliable?

We recommend at least 5 games for initial patterns and 10+ games for high confidence.

← Back to Home•View All Teams for J Smith →•View All Referees for Derby →

🧑‍⚖️ Referee Analysis⚠️ BIAS DETECTED

J SmithvsDerby

Analysis based on 5 matches since 2000

* Note: Detailed card statistics for matches before 2005 may be incomplete.

Wins

Draws

Losses

When J Smith officiates Derby matches, the statistics reveal a severe negative pattern. Based on 5 matches spanning multiple seasons, our comprehensive analysis shows Derby achieves a 0% win rate under J Smith, compared to the 45% baseline expected for teams at this level. This negative 45.0 percentage point difference suggests a meaningful pattern worth examining. The data includes detailed card statistics, match outcomes, and historical trends to provide football fans, bettors, and analysts with evidence-based insights into this referee-team dynamic.

🚨STRONG BIAS DETECTED

🚨 STRONG BIAS DETECTED

This referee has a significantly negative history with this team. Win rate is severely below average.

Bias Score

-45.0%

Matches Analyzed

⚠️

Notable Negative Pattern

With a bias score of -45.0%, this ranks among the more significant negative patterns in our database. Over 5 matches, Derby has won 45 percentage points fewer games than expected. For bettors and fantasy managers, this historical trend suggests extra caution when J Smith is appointed.

The Bias Meter™

Bias Level-45.0%

Bias AgainstNeutralFavorable

Match History

5 matches under this referee

Date	Opponent	Score	Result	Cards	Division
6 Dec 2025	Leicester(H)	1 - 3	LOSS	🟨 3	Championship
2 Nov 2024	Stoke(A)	1 - 2	LOSS	🟨 3	Championship
9 Aug 2024	Blackburn(A)	2 - 4	LOSS	🟨 3	Championship
18 Apr 2022	QPR(A)	0 - 1	LOSS	🟥 1	Championship
16 Oct 2021	Preston(A)	0 - 0	DRAW	—	Championship

Frequently Asked Questions

Detailed Statistics

Win Rate (Under Ref)0.0%

Baseline Win Rate45%

Bias Score-45.0%

Cards for Derby

🟨 Yellows / Game1.80

🟥 Reds / Game0.20

Cards for Opponents

🟨 Opp Yellows / Game1.80

🟥 Opp Reds / Game0.00

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Betting Outlook

TIPSTER INSIGHT

🟥

RED CARD RISK

Red card frequency: 0.2 per game

Higher than average dismissal rate in this matchup.

⚠️ This is statistical analysis, not betting advice. Gamble responsibly.

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